Propelling and sustaining means for aerial navigation.



M. PEARSON PEOPELLING AND SUSTAINING MEANS FOR AERIAL NAVIGATION.

7 APPLICATION FILED JUNE 9, 1913. 1,082,481 4 Patented Dec. 23, 1913.

WITNESSES:

COLUMBIA PLANOURAPH CO.,WASHINUTON, D. c.

MARTIN PEARSON, OF LOS ANGELES, CALIFORNIA;

PROPELLING- AND SUSTAINING- MEANS FOR AERIAL NAVIGATION.

Specification of Letters Patent.

Patented Dec. 23, 1913.

Original application filed February 19, 1913, Serial No. 749,549.Divided and this application filed .Tune 9,

To all whom it may concern:

Be it known that I, MARTIN PEARSON, a citizen of the United States ofAmerica, residing at Los Angeles, county of Los Angeles, State ofCalifornia, have invented a certain new and useful Propelling andSustaining Means for Aerial Navigation; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This application is a division of application filed February 19th, 1913,Ser. No. 749,549.

The invention relates to propelling and sustaining means for aerialnavigation, and it may be said to consist in the provision of the noveland advantageous features and in the novel and improved construction,arrangement, and combination of parts and devices as will be apparentfrom the description and claim which follow hereinafter.

Objects of the invention are to provide novel and improved means of thenature specified which has a comparatively large lifting and sustainingcapacity, is adapted to operate with a comparatively small degree ofslip and is constructed to provide suflicient supporting surface tosustain the apparatus to which it is applied in the event of the motivemeans failing to act, is connected to be driven by either one or both oftwo independent motors, is simple in character, strong and compact inconstruction, comparatively light in weight, safe and easily controlledin use,.and effective in action.

Other objects and the advantages of the invention will be apparent tothose skilled in the art from a consideration of the followingdescription of the preferred construction embodying it, taken inconnection with the accompanying drawings in which Figure 1 is a partlybroken elevational View of the construction; Fig. 2 is an enlargedpartly broken and sectional View taken on the line 22 of Fig. 1; Fig. 3is a partly broken sectional View taken on line 3-3 of Fig. 1; Fig. 4 isa top plan View of the construction; and Fig. 5 is an enlargedfragmentary View taken on the line 5-5 of Fig. 2.

The frame 6not fully shown-may consist of oppositely disposed uprights 7and 8 Serial No. 772,706.

connected by cross-bar 9, together with oppositely disposed uprights 10and 11 arranged at right angles to the uprights 7 and 8 and connected bycross-bar 12; the upper end portion of the uprights 7, 8, 10 and 11being preferably formed semi-circular and joined together at the apex.

The ring 13 provided with inwardly projecting flanges 14 and 15 isadapted to fit over the upper end portion of the frame 6 and isrotatably connected to the frame 6 by means of brackets 16 which aresuitably affixed on the uprights 7, 8, 10, and 11, and have thereonhorizontal rollers 17 adapted to contact with the ring 13 and also havethereon vertical rollers 18 and 19 adapted to contact with the flanges14 and 15.

The semi-par-achutic screw propeller 20 consists of strips 21 having thelower end portion thereof arranged vertically and suitably secured tothe ring 13 and having the upper end portion thereof curved upwardly andextending outwardly and downwardly and suitably secured at their ends tothe ring 22 which is of considerably greater diameter than the ring 13;a covering of suitable fabric 23 being aflixed on the upper portion ofthe strips 21. The strips 21 in each half part of the screw propeller 20are preferably made successively of increased length from opposite endsof a straight line passing through the center of the screw propellerthereby forming the two elevating and sustaining surfaces 24 each ofwhich slopes gradually downwardly and decreases in size from the forwardportion 25 thereof to the rear portion 26 thereof; the smaller rear endportion of one of the surfaces 24 being adjacent to the larger forwardend portion of the other surface 24.

The horizontal screw propeller 20 may be driven by either or both of therotary motors 27 which are disposed opposite to each other on thecross-bar 12; the stationary shafts 28 of the motors 27 having one endthereof mounted on brackets 29 suitably affixed on the uprights 10 and11. The driving connections between the motors 27 and the horizontalscrew propeller 20 may consist of upright shafts 80 mounted in bearings31 and 32 on the uprights l0 and 11 and having on the upper end portionthereof pinions 33 in mesh with the teeth 84 on the ring 13 and havingon the lower end thereof bevel pinions 35 in mesh with the bevel pinions36 at the ends of sleeves 37 which latter are rotatively mounted on thestationary shafts 30; the sleeves 37 having feathered thereon parts 38adapted to be moved to engage with parts 39 which are affixed to therotors of the motors 27-the parts 38 and 39 preferably being in the formof cone clutches. The parts 38 may be moved into or out of engagementwith the parts 39 by means of levers 40 which are pivotally mounted onthe cross-bar l2 and have on the upper end thereof yokes 41 fitted ingrooves in the parts 38; the lower end portion of the levers 40 havingthereon handles 42 adapted to be locked in any desired position by meansof pins 4L3 adapted to engage with the teeth of segmental gears 44mounted on the cross-bar 12. The pins L3 may be operated by bell cranks4L5 pivotally mounted on the handles 42. The central opening 46 in thehorizontal screw propeller 2O permits a downward movement of airtherethrough and thereby reduces the pressure of the air on the upperside of the propeller 20.

The mode of operation and advantages of the invention will be apparentto those skilled in the art from a careful considera tion of theforegoing particular description of the construction, wherefore a moreextended specification is deemed unnecessary in this case.

I claim:

In propelling and sustaining means for aerial navigation, a screwpropeller consisting of a ring, a second ring arranged above and ofgreater diameter than the first ring, strips having the lower endportion arranged vertically and secured to the first ring and having theupper end portion thereof curved upwardly and extending outwardly anddownwardly and secured at the outer ends thereof to the second ring, thestrips in each half part of the screw propeller being successively ofincreased length as set forth, a covering of fabric affixed on the upperportion of the strips and forming the two elevating and sustainingsurfaces 2% which slope downwardly and decrease in size from the frontport-ion thereof to the rear portion thereof, the smaller rear portionof one of the surfaces 24 being adjacent to the larger forward portionof the other of the surfaces 2 substantially as described.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses at Los Angeles, county of LosAngeles, State of California, this 2nd day of June A. D. 1913.

MARTIN PEARSON.

Witnesses A. H. LInDnRs,

ELLA SooT'r.

Copies 0! this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

